bug#56561: 29.0.50; Infloop in try_window

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

>> The point I was making was that aborting in such a situation (when there
>> is no row where ends_at_zv_p is true) will result in false positives
>> when the tooltip is intentionally too small to display the entire text.

> Yes, and so this situation should be detected, and we should avoid
> triggering the assertion violation in that case.

Hmm.  I might've missed where you explained that, but how would I go
about detecting that situation?

The way I understand the code is that we set the window dimensions to
the max tooltip size, create a glyph matrix of that size, and then call
try_window.

Thanks.